<template>
    <div>
        <template v-for="item in this.menulist" >
          <el-submenu :disabled="item.disabled" :index="item.id+''" :key="item.id+''" v-if="item.children.length>0">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.menuName }}</span>
            </template>
            <MenuTree :menulist="item.children"></MenuTree>
          </el-submenu>
          <el-menu-item
          v-else
          :disabled="item.disabled"
          :index="item.url+''"
          :route="item.url+''"
          :key="item.id"
          @click="savePath(item.url)"
          >
            <i :class="item.icon"></i>
            <span slot="title">{{item.menuName}}</span>
          </el-menu-item>
        </template>
    </div>
</template>

<script>
    export default {
      name: 'MenuTree',
      props:['menulist'],
      methods:{
        //保存激活的路径
        savePath(path){
          window.sessionStorage.setItem("activePath",path);
          //调用父类Main.vue的activePath
          this.activePath=path;
        }
      }
    }
</script>

<style scoped>
/*菜单栏的溢出处理样式*/
.el-menu--collapse span,
.el-menu--collapse i.el-submenu__icon-arrow {
  height: 0;
  width: 0;
  overflow: hidden;
  visibility: hidden;
  display: inline-block;
}
</style>
